Does radiation intensity depend on the distance from the source?

A lossless antenna is fed with 1.6 mW of power and has a directive gain of 5 dB. Find the total power radiated by the antenna.

Given the S matrix, determine if the network is symmetric.

S = [ 0.262 0°     0.38 -45°

       0.38 45°      0.262 0°]

The refractive indices of medium 1 and 2 are given as 3.2 and 2.6 respectively.

Find the ratio of the sine of the incident angle to the sine of the reflected angle.

For a distortion-less transmission line, the resistance is 10 Ω/m, the inductance is 0.9 μH/m, and the capacitance is 21 pF/m. Calculate the value of G in milli-mho/m.

Calculate the work done in the power transmission when the electric field, E = 52 units and the magnetic field intensity, H = 72 units. The velocity of propagation is 18 m/s.

The total magnetic flux through the xy plane for a circular loop of radius R carrying current I lying in the xy plane with its center at the origin is:

The charge q = 10mC is at rest initially , when it is kept in time varying Magnetic field B = 5t²a_x + 6t³a_y then it starts moving with velocity V = 2ta_x - 3t²a_y . what will be the acceleration a of charge q at t = 2sec , if the mass of charge q is 2Kg.

A charged particle moves through a magnetic field perpendicular to its direction of motion. What happens to the particle's momentum and kinetic energy?

The condition under which a microwave oven heats up a food item containing water molecules most efficiently is: